Topic: Optimization
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Both GROUPBY and SUMMARIZE are useful functions to group by columns. However, they differ in both performance and functionalities. Knowing the details lets developers choose the right function for their specific scenario. Read more
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A filter argument in CALCULATE is always an iterator. Finding the right granularity for it is important to control the result and the performance. This article describes the options available to create complex filters in DAX. Read more
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This article describes how to use the Group By Columns property to store the slicer selection by using the same column used in a SWITCH function to optimize the query performance. Read more
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This article describes how to optimize a text search operation in DAX. This technique can improve the performance of Power BI reports that use the contains condition in the filter pane or the filter mode of the Smart Filter Pro… Read more
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The second edition of the Optimizing DAX video course is available: new content, a new book, and some on the behind-the-scenes of the project. Read more
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The SWITCH function in DAX has been optimized over the years, and it is helpful to know what makes the optimization work best. Read more
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Horizontal fusion is a new optimization technique available in DAX to reduce the number of storage engine queries. In this article, we introduce this optimization with some examples. Read more
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This article describes how to create a virtual relationship in DAX using the TREATAS function, which is more efficient than approaches based on INTERSECT or FILTER. Read more
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This article describes how to use and interpret the information provided by the Power BI Performance Analyzer, finding the bottlenecks in slow reports. Read more
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This article describes how to return BLANK instead of zero in a DAX measure. Using this technique, you can remove rows in a Power BI matrix visual where the result of a measure is zero. Read more